DataVXACS Energy LettersPaper
journal article·2018-01-12Open access

Asymmetric K/Li-Ion Battery Based on Intercalation Selectivity

Jiaxin Zheng, Wenjun Deng, Zongxiang Hu, Zengqing Zhuo, Fusheng Liu, Haibiao Chen, Yuan Lin, Wanli Yang, Khalil Amine, Rui Li, Jun Lu, Feng Pan

ACS Energy Letters· Volume 3· Issue 1
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Source abstract

Abstract

Using ab initio calculations combined with experimental confirmation, we design an asymmetric intercalation battery using K2NiFeII(CN)6 as the cathode, commercial graphite as the anode, and an organic electrolyte containing mixed lithium and potassium salts. It works by reversible K-ion intercalation at the cathode side and reversible Li-ion intercalation at the anode side simultaneously. The π-electron coordination environment in K2NiFeII(CN)6 ensures the preferred reversible intercalation of the K-ion, and the small ionic radius ensures the preferred reversible intercalation of the Li-ion in graphite. It also shows a high working voltage (∼3.6 V) and an ultralong cycling life with no capacity fading even after 5000 cycles.
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Research context

Energy storage

OpenAlex topics: Advancements in Battery Materials · Advanced Battery Materials and Technologies · Advanced Battery Technologies Research

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

School of Advanced Materials, Shenzhen Graduate School, Peking University, Shenzhen 518055, People’s Republic of China

Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States

College of Materials Science and Engineering, Shenzhen University and Shenzhen Key Laboratory of Special Functional Materials, Shenzhen 518060, People’s Republic of China

Electrochemical Technology Program, Chemical Sciences and Engineering Division, Argonne National Laboratory, Argonne, Illinois 60439, United States

Funding

Ministry of Science and Technology of the People's Republic of China · Office of Energy Efficiency and Renewable Energy · National Natural Science Foundation of China · Shenzhen Science and Technology Innovation Commission

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